Electric kettle



FIG. 1 is a front, right side, perspective view of an electric kettle showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a front, right side perspective view showing the claimed design removed from the base for clarity of understanding the disclosure.

The broken lines indicate portions of the article that form no part of the claimed design. 

CLAIM The ornamental design for an electric kettle, as shown and described. 